Will Gold Miner Stock be outperform?

Thanks to recent gold future price drop, it brought most gold miner stock, as AU, GSS, back to decades low price. I am considering to add some long-term allocation. But I worried about the bear market of gold in next might ten years. If those gold producer have a full hedge book, it will be fine. So my question is, if possible, where to find those hedge books (I hope it could be easy access).